''Lecidella'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

crustose lichen Crustose lichens are lichens that form a crust which strongly adheres to the Substrate (biology), substrate (soil, rock, tree bark, etc.), making separation from the substrate impossible without destruction. The basic structure of crustose lichen ...

s in the family

Lecanoraceae The Lecanoraceae are a family of lichen A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the c ...

Taxonomy

''Lecidella'' was circumscribed by German lichenologist Gustav Wilhelm Körber in 1855. It was not widely used until more than a century later, when Hannes Hertel recognized it first as a

subgenus In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...

of ''

Lecidea ''Lecidea'' is a genus of crustose lichen, crustose lichens with a carbon-black ring or outer margin (exciple) around the fruiting body disc (apothecium), usually (or always) found growing on (Saxicolous lichen, saxicolous) or in (Endolithic lich ...

'', and then a couple of year after as a distinct genus. A

phylogenetic In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ...

analysis of the genus using 11 species (mostly from China) found that ''Lecidella'' species fall into three major

clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...

s, which were proposed as three informal groups: ''Lecidella stigmatea'' group, ''L. elaeochroma'' group and'' L. enteroleucella'' group.

Description

''Lecidella'' species have a

thallus Thallus (: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. A thallus usually names the entir ...

that is

crustose Crustose is a Habit (biology), habit of some types of algae and lichens in which the organism grows tightly appressed to a substrate, forming a biological layer. ''Crustose'' adheres very closely to the Substrate (biology), substrates at all poin ...

, and , meaning that it resembles the genus '' Biatora''–having a proper exciple, which is not coal-black (, but coloured or blackening. It has eight-spored asci of the ''Lecidella'' type. The

ascospore In fungi, an ascospore is the sexual spore formed inside an ascus—the sac-like cell that defines the division Ascomycota, the largest and most diverse Division (botany), division of fungi. After two parental cell nucleus, nuclei fuse, the ascu ...

s are and

hyaline A hyaline substance is one with a glassy appearance. The word is derived from , and . Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellula ...

, while the

conidia A conidium ( ; : conidia), sometimes termed an asexual chlamydospore or chlamydoconidium (: chlamydoconidia), is an asexual, non- motile spore of a fungus. The word ''conidium'' comes from the Ancient Greek word for dust, ('). They are also ...

are curved and threadlike. Morphologically similar genera include '' Japewiella'', '' Carbonea'', and '' Tasmidella''.

Species

''Lecidella'' was estimated to contain about 80 species in a popular 2008 text, a number that was used in a (2020) survey of fungal classification. ,

Species Fungorum ''Index Fungorum'' is an international project to index all formal names (Binomial nomenclature, scientific names) in the fungus Kingdom (biology), kingdom. As of 2015, the project is based at the Royal Botanic Gardens, Kew, one of three partn ...

(in the

Catalogue of Life The Catalogue of Life (CoL) is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxono ...

) accepts 40 species in the genus. Lecidella asema - Flickr - pellaea

*'' Lecidella aeruginea'' *'' Lecidella anomaloides'' *'' Lecidella asema'' *'' Lecidella aurata'' *'' Lecidella buelliastrum'' *'' Lecidella carpathica'' *'' Lecidella chiricahuana'' *'' Lecidella chodatii'' *'' Lecidella conspurcatosorediosa'' *'' Lecidella destituta'' *''

Lecidella elaeochroma ''Lecidella elaeochroma'' is a species of fungus belonging to the family Lecanoraceae. It has cosmopolitan distribution. References

{{Taxonbar, from=Q1525272 Lecanoraceae Lichen species Taxa named by Erik Acharius Lichens described in 18 ...

'' *'' Lecidella enteroleucella'' *'' Lecidella euphorea'' *'' Lecidella flavosorediata'' *'' Lecidella flavovirens'' *'' Lecidella fuliginea'' *'' Lecidella granulosula'' *''

Lecidella greenii ''Lecidella greenii'' is a species of lichen in the family Lecanoraceae. Known from Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded ...

'' *'' Lecidella iqbalii'' *''

Lecidella laureri ''Lecidella'' is a genus of crustose lichens in the family Lecanoraceae. Taxonomy ''Lecidella'' was circumscription (taxonomy), circumscribed by German lichenologist Gustav Wilhelm Körber in 1855. It was not widely used until more than a centu ...

'' *'' Lecidella leucomarginata'' – Australia *'' Lecidella mandshurica'' – Asia *'' Lecidella meiococca'' *'' Lecidella meridionalis'' – Australia *'' Lecidella montana'' *'' Lecidella nashiana'' *'' Lecidella occidentalis'' *'' Lecidella oceanica'' – South Korea *'' Lecidella parasitica'' *'' Lecidella patavina'' *'' Lecidella pulveracea'' *'' Lecidella scabra'' *'' Lecidella stigmatea'' *'' Lecidella sublapicida'' *'' Lecidella subviridis'' – Norway; Sweden *'' Lecidella varangrica'' – Norway *'' Lecidella viridans'' *'' Lecidella wulfenii'' *'' Lecidella xylogena'' *'' Lecidella yunnanensis'' – China

References

{{Taxonbar, from=Q6511689 Lecanoraceae Lichen genera Lecanorales genera Taxa described in 1855 Taxa named by Gustav Wilhelm Körber